ASSESSMENT OF INTESTINAL OBSTRUCTION USING VARIOUS IMAGING MODALITIES

Authors

Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran

10.22034/icrj.2022.173714

Abstract

Background:
Bowel obstruction (BO) happens when the lumen of the bowel is blocked leading to proximal dilatation and distal collapse. Causes either functional or mechanical are classified into complete and partial obstruction in small or large intestines [1]. Outstanding clinical features usually include pain, vomiting, constipation, and abdominal distention. High morbidity and mortality in uncontrolled cases indicate the importance of early diagnosis [2]. Abdominal imaging can help physicians to verify the diagnosis, and commence the treatment as soon as possible [3]. The purpose of the current study is to compare and evaluate the application of imaging modalities such as plain radiography, computed tomography (CT), and magnetic resonance imaging (MRI) in diagnosing BO.
Methods:
“PubMed”, “ScienceDirect”, and “Google Scholar” scientific databases were scanned to obtain valid and relevant articles to our subject, then the most relevant articles to the topic were selected and summarized.
Results:
Plain radiography is widely recognized as the least helpful imaging modality for the diagnosis of BO, and it is difficult to determine the exact location and cause of obstruction using it[4-6]. However, abdominal radiography serves as an initial imaging study in patients to evaluate BO[7]. CT is an accurate modality and particularly is capable of ascertaining the level and cause of obstruction [8, 9]. Based on the studies reviewed, fast MRI was the best and could be used to attain more information despite some restrictions such as high cost and limited accessibility.[10, 11].
Conclusion:
Imaging modalities were found to play a prominent role in diagnosing BO. Among the imaging methods evaluated, MRI and CT, respectively had the highest sensitivity, specificity, and accuracy. These findings suggest that CT or MRI should be applied when the results of plain radiography are insufficient.

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